WO2001085424A1 - Mould for the production of plastic caps with gasket - Google Patents
Mould for the production of plastic caps with gasket Download PDFInfo
- Publication number
- WO2001085424A1 WO2001085424A1 PCT/IT2000/000172 IT0000172W WO0185424A1 WO 2001085424 A1 WO2001085424 A1 WO 2001085424A1 IT 0000172 W IT0000172 W IT 0000172W WO 0185424 A1 WO0185424 A1 WO 0185424A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gasket
- mould
- moulding cavity
- cap
- core
- Prior art date
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 41
- 229920003023 plastic Polymers 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000000465 moulding Methods 0.000 claims abstract description 67
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 239000002826 coolant Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
- B29C2045/1637—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities the first injected part and the movable mould part being movable together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1681—Making multilayered or multicoloured articles one layer penetrating at one or more areas through another layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
- B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
Definitions
- the present invention relates to a mould for the production of plastic caps with gasket for containers in general such as, for example, bottles, flasks and jars and, in particular, to a mould comprising a hollow element in which a moulding chamber is formed, a cavity for the supply of thermoplastic material, a ring and a core.
- the present invention also relates to a method of producing plastic caps with gasket for containers in general such as, for example, bottles, flasks and jars.
- the first method consists of a first step in which the cap and the corresponding gasket are formed separately and a second step for fitting the gasket in the cap.
- This method generally provides for the injection-moulding of a plastic cap in a suitable mould, the moulding of the gasket in a mould other than that used for the production of the cap and, finally, for the fitting of the gasket in the cap which is performed manually or with the aid of suitable devices .
- the second method consists of the formation of the gasket directly in the cap.
- a certain quantity of plastics material is heated so as to be rendered fluid and is deposited inside the cap at the level of its top.
- a punch is then inserted in the cap to form the gasket.
- the gasket is thus applied directly to the top of the cap in the form of a plastics film which adheres firmly to the top .
- the finished part is constituted by two distinct components, which meets with ever less approval by the purchasers.
- the second method eliminates the step of fitting two pieces together, and also leads to a certain degree of simplification of the production apparatus. This translates into an improvement in the production cycle in terms of times. Moreover, since the cap produced by this method no longer consists of two separate components, it meets with greater approval by customers.
- the above-mentioned method nevertheless involves the use of a conventional mould or punch for forming a cap and a separate punch for forming the gasket.
- the apparatus is still complex and bulky and is constructed in a manner suitable for and limited to the specific method described above.
- the problem upon which the present invention is based is therefore that of devising a mould for the production of plastic caps with gasket which has structural and functional characteristics such as to satisfy the above-mentioned requirements and at the same time to prevent the problems of moulds for the production of plastic caps with gasket of the prior art.
- Figure 2 is a schematic cross-sectional view of a first variant of a detail of the mould of Figure 1
- Figure 3 is a schematic cross-sectional view of a second variant of a detail of the mould of Figure 1,
- Figure 4 is a schematic cross-sectional view of the mould of Figure 1, in a first condition of use,
- Figure 5 is a schematic cross-sectional view of the mould of Figure 1, in a second condition of use
- Figure 6 is a perspective view of a third variant of a detail of the mould according to the invention, in a first condition of use
- Figure 7 is a perspective view of a detail of the mould of Figure 6, in a second condition of use
- Figure 8 is a schematic cross-sectional view of the mould of Figure 6, in a first condition of use
- Figure 9 is a schematic cross-sectional view of the mould of Figure 6, in a second condition of use
- Figure 10 is a schematic cross-sectional view of a fourth embodiment of a detail of the mould, in a first condition of use,
- Figure 11 is a schematic cross-sectional view of a detail of the mould of Figure 10, in a second condition of use
- Figure 12 is a schematic cross-sectional view of a fifth variant of a detail of the mould, in a first condition of use
- Figure 13 is a schematic cross-sectional view of a detail of the mould of Figure 12, in a second condition of use.
- a mould for the production of plastic caps with gasket according to the present invention is generally indicated 1.
- the apparatus which operates the mould 1 will not be described below since it is widely known in the art .
- the mould 1 comprises a hollow or female element 2, a core or male element 4 , and a ring 3.
- the hollow element 2 has a moulding cavity 5 which constitutes the moulding chamber for the formation of the gasket and of the cap.
- the hollow element 2 also comprises a housing 6 for two injectors 7 and 8 for supplying the plastics material, which are arranged coaxially and communicating with the moulding cavity 5 by means of a single orifice 9 for the injection of the plastics material .
- the moulding cavity 5 comprises an end 10, a substantially cylindrical side wall 11, and a connecting region 12 between the end and the side wall . According to a preferred embodiment shown in the drawing 1, the orifice 9 is positioned in the centre of the end 10 of the moulding cavity 5.
- the core 4 (of which only the end portion is shown in the drawing 1) comprises three coaxial elements movable relative to one another along a common longitudinal axis X-X, that is, an inner element 13, an intermediate element 14, and an outer element 15.
- the intermediate element 14 is disposed coaxially outside the inner element 13.
- it comprises a body 18 and an end portion 19 which has a larger diameter than the body and is connected thereto by means of a shoulder 20 ( Figure 4).
- the end portion 19 also has an outer annular rim 21 and an upper annular rim 22.
- the outer annular rim 21 is such as to engage the wall of the connecting region 12 between the end 10 and the side wall 11 of the moulding chamber 5 when the mould is in the gasket-moulding stage. If the connecting region 12 has a frustoconical shape, the outer annular rim 21 will therefore preferably have a complementary frustoconical shape.
- the upper annular rim 22 of the end portion 19 preferably also comprises an annular groove 23 for forming an annular lip projecting from the gasket.
- the outer element 15 is disposed coaxially outside the intermediate element 14.
- the outer element 15 has an externally threaded end portion 25 for forming the threaded skirt of the cap.
- the end portion 24 of the outer element 15 has an upper annular rim 25 shaped so as to be complementary with the shoulder 20 of the head end 19 of the intermediate element 14 and thus to be able to engage it during the cap-forming stage.
- the intermediate element 14 and the outer element 15 also have a cooling system which is preferably formed outside the outer element 15.
- This system which is not shown, consists of a space which is provided around the outer element 15 and in which a coolant fluid can flow.
- the space may be formed between an inner bush, positioned in contact with the outer element 15 and an outer bush which surrounds the inner bush.
- the two bushes that is, the inner bush and the outer bush, may extend approximately as far as the moulding chamber when the mould 1 is in the working condition.
- the ring 3 is constituted substantially by a plate having a central hole with cylindrical walls of a diameter such as to engage for sliding with the core 4 towards the hollow element 2 and to abut the lower wall of the hollow element 2 in a leaktight manner when the mould 1 is in the working condition.
- the ring 3 serves to form the locking ring of a cap.
- the operation of the mould 1 described above provides basically for the following steps: forming the gasket, setting of the gasket, forming the cap, setting of the cap, and release of the finished cap with the gasket.
- the gasket-forming and cap-forming steps take place by the injection of suitable thermoplastics material through the injectors 8 and 7, respectively, and through the orifice 9.
- the moulding cavity 5 houses the head end 26 of the core 4, whilst the ring 3 engages the lower wall of the hollow element 2, as shown in Figures 4 and 5.
- the gasket-forming step consists of the injection of a first type of thermoplastic material, preferably polyethylene, into the moulding cavity 5 and of subsequent cooling of the core 4.
- the ring 3 and the core 5 4 are first of all moved along the axis X-X towards the hollow element 3 so that the former abuts the hollow element 2 and the latter has its head end 26 housed in the moulding cavity 5.
- the inner element 13 and the intermediate element 14 are then moved together further 10 along the axis X-X towards the end 10 of the moulding cavity 5 until the outer annular rim 21 of the end portion 19 of the intermediate element 14 abuts the connecting region 12 of the moulding chamber 5.
- the setting step then takes place; during this step
- a coolant fluid is caused to flow in the manner of a fountain through the rising duct 16 and the downward duct
- the 25. intermediate element 14 is retracted from the moulding cavity 5 until the shoulder 20 engages the upper annular rim 25 of the outer element 15.
- the gasket formed will remain adhering to the upper surface 27 of the core 4 as a result of the restrained coupling formed between the projecting lip of the gasket and the groove 23.
- Other systems such as, for example, knurling formed on the upper surface 27, may similarly be provided for restraining the gasket on the surface.
- the shoulder 20 of the end portion 19 of the intermediate element 14 will engage the upper annular rim 25 of the end portion 24 of the outer element 15.
- a continuous outer surface for forming the skirt and the top of the cap is thus created between the intermediate element 14 and the outer element 15, that is, the junction between these elements does not form projections, steps and/or cracks.
- the outer annular rim 21 of the intermediate element 14 no longer engages the surface of the connecting region 12 of the moulding cavity 5.
- the cap-forming chamber 29 is thus created between the core 4, the ring 3 and the inner surface of the moulding cavity 5.
- the forming chamber 29 is hatched for greater clarity.
- the forming chamber 29 can receive thermoplastic material of a second type, preferably polypropylene heated so as to be rendered fluid, for the formation of the cap. This takes place by injection of the plastics material by means of the injector 7 disposed coaxially outside the injector 6.
- this latter injection fills both the end 10 and the side 11 of the moulding cavity 5 so as to form the top and the threaded skirt of the cap, respectively.
- the mould 1 is opened and the step of releasing the finished cap takes place by ejection of the cap from the core 4 by the advance of the inner element 13 towards the hollow element 2.
- the mould and the method according to the present invention in fact avoid the complexity and space requirement of a second mould or of a second punch for forming the gasket .
- the cap-forming and gasket-forming steps are also accelerated since the steps take place in close succession. It has in fact been calculated that the duration of the production cycle for a cap with gasket according to the. present invention is reduced by at least approximately 50% in comparison with the production cycle according to the prior art. This signifies a surprising increase in productivity which may even reach approximately 60%.
- the above-described mould can also advantageously be adapted to existing apparatus.
- the mould according to the present invention may be provided with a core constituted by two cylindrical elements, that is, an inner element and an outer element, instead of three.
- the outer element 30 of Figure 2 corresponds to the formation of the intermediate and outer elements 14 and 15 of Figure 1 as a single piece.
- the outer element 30, which comprises a body 31 and an end portion 32 with a rim 33 will be movable axially between a first position in which the rim 33 defines a gasket-forming chamber by abutting the walls of the moulding cavity 5, particularly the connecting region 12, and a second position, to which it is retracted along the axis X-X and in which the rim 33 no longer abuts the walls of the moulding cavity 5 and therefore no longer closes the moulding cavity 5, defining the cap-forming chamber.
- the core 4 may be constituted by a single element 35 comprising a body 36 and an end portion 37 with an outer annular rim 38, corresponding to the formation of the inner, intermediate and outer elements 13, 14 and 15 of Figure 1 as a single piece.
- a cap with a gasket comprising means for anchoring the gasket to the cap.
- the mould 101 has a core 39 comprising an inner element 40 wholly similar to the inner element 13 of Figure 1, an intermediate element 41, and an outer element 42.
- the intermediate element 41 is a hollow cylinder open at its two ends and disposed coaxially outside the inner element 40. As best shown in Figure 6, the intermediate element 41 has, on its upper annular surface which constitutes its rim, a circular series of projections 44 intercalated with transverse recesses 43 at regular intervals.
- the projections 44 have a width less than the width of the upper annular surface of the intermediate element 41 and the projections 44 are arranged in substantially centred positions thereon.
- the projections 44 are preferably substantially rectangular; more generally, they may be of different shapes.
- the projections 44 form a crenellation, the projecting portions of which are distributed in a circular arrangement and are separated by spaces arranged at substantially regular intervals.
- the outer element 42 is a hollow cylinder which is also open at its two ends and is disposed coaxially outside the intermediate element 41.
- the outer element 42 has a body 45 and a head end 46 having an outer annular rim 47 and an upper annular rim 48.
- the outer annular rim 47 is such as to engage the wall of the connecting region 12 between the end 10 and the side wall 11 of the moulding chamber 5 when the mould is in the gasket-moulding stage, as described fully above .
- the upper annular rim 48 has an inner recess 49 which cooperates with the outer wall of the intermediate element 41 to create an annular recess suitable for forming the projecting annular lip of the gasket.
- the upper annular rim 48 preferably also has a first groove 50 formed at the base of the outer annular rim 47 and a second groove 51 positioned between the recess 49 and the first groove 50.
- the first and second grooves serve to form a circular outer edge and a circular tooth-shaped element of the gasket, respectively, in order to improve its sealing against the upper rim of the neck of a bottle.
- the core 39 is fitted with its head end 52 inside the moulding cavity 5 so that the outer element 42 abuts the inner wall of the connecting region 12 between the end 10 and the side wall 11 of the moulding cavity.
- the intermediate element 41 is in abutment with the end 10 by means of the projections 44, whilst the inner element 40 is disposed a predetermined distance from the end 10.
- thermoplastic material for forming the gasket can be injected as explained fully above .
- the fluid thermoplastic material will fill firstly the space formed between the upper surface of the inner element 40 and the end 10 of the moulding cavity 5 and, subsequently, the space defined by the end 10, by the inner .wall of the connecting region 12, and by the outer element 42, through the recesses 43.
- the gasket just formed is then set as already described fully above .
- the ring 3 abuts the moulding cavity 5 in order to close the cavity in collaboration with the outer element 42 and, at the same time, to form the security ring of the cap.
- the intermediate element 41 Prior to the injection of the thermoplastic material, the intermediate element 41 is retracted further relative to the inner and outer elements 40 and 42 so as to create an empty space 53 which extends through the thickness of the gasket.
- the empty space 53 will necessarily have a shape substantially complementary to that of the upper surface of the intermediate element 41.
- thermoplastic material for forming the cap can be injected.
- this fluidized material will fill the space defined by the end 10, by the side wall 11, by the connecting region 12, and by the head ends of the inner, intermediate and outer elements 40, 41 and 42.
- thermoplastic material will also fill the space 53.
- the mould 102 comprises a core 54 constituted by an inner element 55 and an outer element 56, arranged coaxially.
- the outer element has a body 57 and an end portion 58, the outer portion 58 having an outer annular rim 59 and an upper annular rim 590.
- the upper annular rim 590 preferably comprises a groove 591 identical to the groove 49 of the outer element 42 of the mould 101 of Figure 6.
- the moulding cavity 60 has an end 61 having an annular projection 62 with a dovetail-shaped cross-section. This projection 62 faces towards the inside of the moulding cavity.
- Figure 10 shows the position of the mould during the formation of the gasket, in which the head end 63 of the core 54 is disposed inside the moulding cavity 60.
- the gasket, as well as the cap, are formed as described fully above .
- the gasket 64 will thus have a recess 65 of a shape complementary to that of the projection 62.
- the recess 65 will be filled by a portion of the material of the top of the cap, thus forming a firm shaped coupling with the gasket 64.
- the moulding cavity 60 may have an annular groove with a dovetail-shaped cross-section, formed in the end 61.
- the means for anchoring the gasket to the cap are in reversed positions in comparison with those just described above.
- the projections 62 of Figure 10 extend from the gasket and engage complementary recesses formed in the thickness of the top of the cap.
- the mould 103 comprises a core 70 constituted by an inner element 71, an intermediate element 72, and an outer element 73, arranged coaxially. Parts common with the previous embodiments are indicated by the same reference numerals and will not be described further.
- the outer element 73 has a body 74 and an end portion ' 75, the end portion 75 having an outer annular rim 76 and an upper annular rim 77.
- the shape of the end portion 75 is substantially identical to that described with reference to the embodiment of Figure 6 and preferably has a groove 750 substantially identical to the groove 49 shown in Figure 6, for the formation of the projecting annular lip of the gasket.
- the inner and intermediate elements 71 and 72 have respective substantially flat upper surfaces 78 and 79 so as to form an abutment with the end 10 of the moulding cavity 5 of the mould 103.
- the moulding cavity 5 is also in communication with two separate injectors 81 and 82 through respective orifices.
- the orifice of the injector 81 is positioned in the region of the upper annular rim 77 of the outer element 73 and the orifice of the injector 82 is positioned in the region of the upper surface of the inner element 71.
- the mould 103 is disposed with the end portion 75 of the core 70 inserted in the moulding cavity
- the upper surfaces 78 and 79 of the inner and intermediate elements 71 and 72, respectively, are in abutment with the end 10 of the moulding cavity 5.
- the gasket-forming chamber 28 is reduced to an annular portion defined on the outside by the upper annular rim 77 of the outer element 73, at the top by the end 10 of the moulding cavity 5, and on the inside by the intermediate element 72.
- thermoplastic material is then injected by the injector 81 and is cooled as described fully above.
- the inner, intermediate and outer elements 71, 72 and 73 are retracted from the moulding cavity 5 together so as to create the cap-forming chamber 29.
- annular gasket formed during the previous step which is shown hatched in - Figure 13 for greater clarity, remains on the upper annular rim 77 of the outer element 73.
- thermoplastic material is injected to form the cap by means of the injector 82.
- the thermoplastic material is then cooled as described above .
- the injectors of the thermoplastic material are arranged adjacent one another instead of coaxially, but may be disposed in other relative positions, on the basis of specific requirements .
- the mould according to the present invention may undergo variations of shape on the basis of contingent requirements.
- the thread of the outer element may have one start or several starts.
- thermoplastic material supplied firstly with a first type of thermoplastic material and subsequently with a second type of thermoplastic material, for the moulding of the gasket and of the cap, respectively.
- the externally-positioned cooling system may be replaced by a circuit consisting of a helical duct recessed in the outer lateral surface of the intermediate element so that the coolant fluid also passes over the inner lateral surface of the outer element.
- the above- mentioned circuit will be provided with seals to prevent leakage of coolant fluid between the intermediate and outer elements.
- the mould may also be of a size such as to produce caps of variable diameter, according to requirements.
- the mould according to the present invention it is possible to produce caps for containers in general such as, for example, bottles for drinks, flasks, and jars for preserves.
- the material of which the mould is manufactured may be metals, light alloys, models suitably reinforced with fusible alloys and covered with metals deposited by sputtering, and yet further materials suitable for particular situations.
- the moulds may be of the type with two plates or of the type with three plates.
- thermoplastic materials used for forming the cap and the corresponding gasket may vary according to requirements or particular preferences.
- the mould according to the present invention may preferably comprise an operating and control unit (not shown) for measuring and controlling the distance between the end and the core during the various steps of the moulding of the cap with gasket .
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Closures For Containers (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT00927722T ATE249911T1 (en) | 2000-05-05 | 2000-05-05 | MOLD FOR PRODUCING PLASTIC CLOSURES WITH SEALS |
PCT/IT2000/000172 WO2001085424A1 (en) | 2000-05-05 | 2000-05-05 | Mould for the production of plastic caps with gasket |
DE60005407T DE60005407T2 (en) | 2000-05-05 | 2000-05-05 | MOLD FOR THE PRODUCTION OF PLASTIC LATCHES WITH GASKET |
ES00927722T ES2207510T3 (en) | 2000-05-05 | 2000-05-05 | MOLD FOR THE PRODUCTION OF PLASTIC PLUGS WITH GASKET. |
AU46107/00A AU4610700A (en) | 2000-05-05 | 2000-05-05 | Mould for the production of plastic caps with gasket |
EP00927722A EP1280643B1 (en) | 2000-05-05 | 2000-05-05 | Mould for the production of plastic caps with gasket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2000/000172 WO2001085424A1 (en) | 2000-05-05 | 2000-05-05 | Mould for the production of plastic caps with gasket |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001085424A1 true WO2001085424A1 (en) | 2001-11-15 |
WO2001085424A8 WO2001085424A8 (en) | 2002-03-21 |
Family
ID=11133517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2000/000172 WO2001085424A1 (en) | 2000-05-05 | 2000-05-05 | Mould for the production of plastic caps with gasket |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1280643B1 (en) |
AT (1) | ATE249911T1 (en) |
AU (1) | AU4610700A (en) |
DE (1) | DE60005407T2 (en) |
ES (1) | ES2207510T3 (en) |
WO (1) | WO2001085424A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60912A (en) * | 1983-06-11 | 1985-01-07 | Taisei Kako Kk | Manufacture of synthetic resin cap equipped with soft sealing member |
FR2593148A1 (en) * | 1986-01-22 | 1987-07-24 | Retief Charles | CLOSURE FOR CONTAINERS, AND METHOD FOR MANUFACTURING SUCH CLOSURE. |
US4803031A (en) * | 1982-06-03 | 1989-02-07 | Anchor Hocking Corporation | Method and apparatus for molding a closure cap |
JPH02227228A (en) * | 1989-02-28 | 1990-09-10 | Nissei Plastics Ind Co | Molding method for cap with sealing material and molding device for the same |
US5447674A (en) * | 1987-06-04 | 1995-09-05 | Schellenbach; Frank | Method for producing a gas-tight plastic closure for containers |
EP0688652A1 (en) * | 1994-06-06 | 1995-12-27 | Husky Injection Molding Systems Ltd. | Opposed gating injection method |
GB2297711A (en) * | 1995-02-08 | 1996-08-14 | Robinson & Sons Ltd | Method and apparatus for manufacturing sealing closure and insert |
-
2000
- 2000-05-05 WO PCT/IT2000/000172 patent/WO2001085424A1/en active IP Right Grant
- 2000-05-05 DE DE60005407T patent/DE60005407T2/en not_active Expired - Fee Related
- 2000-05-05 ES ES00927722T patent/ES2207510T3/en not_active Expired - Lifetime
- 2000-05-05 AT AT00927722T patent/ATE249911T1/en not_active IP Right Cessation
- 2000-05-05 AU AU46107/00A patent/AU4610700A/en not_active Abandoned
- 2000-05-05 EP EP00927722A patent/EP1280643B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4803031A (en) * | 1982-06-03 | 1989-02-07 | Anchor Hocking Corporation | Method and apparatus for molding a closure cap |
JPS60912A (en) * | 1983-06-11 | 1985-01-07 | Taisei Kako Kk | Manufacture of synthetic resin cap equipped with soft sealing member |
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Also Published As
Publication number | Publication date |
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AU4610700A (en) | 2001-11-20 |
DE60005407T2 (en) | 2004-06-24 |
EP1280643B1 (en) | 2003-09-17 |
WO2001085424A8 (en) | 2002-03-21 |
EP1280643A1 (en) | 2003-02-05 |
ES2207510T3 (en) | 2004-06-01 |
DE60005407D1 (en) | 2003-10-23 |
ATE249911T1 (en) | 2003-10-15 |
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